[PATCH] Avoid error message on rk3328 use

[Etienne Buira]

On Sat, Apr 13, 2024 at 05:49:13PM +0200, Krzysztof Kozlowski wrote:
> On 13/04/2024 17:23, Etienne Buira wrote:
> >>> presence of gpio,syscon-dev node (or it will call dev_err() when probed).
> >>> Correct rk3328.dtsi and related documentation to follow syscon's
> >>> expectations.
> >>
> >> No, look at gpio-syscon driver. Parent is used.
> > 
> > Parent is used, but the next lines are:
> > ret = of_property_read_u32_index(np, "gpio,syscon-dev", 1, &priv->dreg_offset);
> > if (ret)
> > 	dev_err(...)
> > 
> > So if gpio,syscon-dev does not have at least 2 items (or is missing),
> > dev_err will be called, 3 items for dev_dbg.
> > Current tree displays a spurious "can't read the data register offset"
> > message.
> 
> Hm, indeed, then I think driver, so
> aa1fdda8f7ebf83f678e8d3c2ab4f1638c94195f, should be fixed. Otherwise
> please say why binding is not correct and driver is good.

I tried fixing the driver first, this was discussed here:
https://lore.kernel.org/linux-gpio/ZhptEWb7tD5pummq@Z926fQmE5jqhFMgp6/T/#t
you're welcome to comment.

I have no strong opinion over what should be fixed, i just wished to
shut a spurious error message, that i expected to be straightforward at
first (hence good candidate for first kernel patch).

Regards